{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"github.com/mattermost/mattermost-server/v5","cve_ids":["CVE-2026-6334"],"ecosystem":"Go","epss":0.00118,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-jp3f-x449-4q75","id":"tcs_01M5KGMHSB8J8QWPSBC0H9Q6PY","modified_at":"2026-06-25T23:00:17.667622181Z","published_at":"2026-06-25T22:34:31Z","references":["https://osv.dev/vulnerability/GO-2026-5474","https://github.com/advisories/GHSA-jp3f-x449-4q75","https://nvd.nist.gov/vuln/detail/CVE-2026-6334","https://github.com/mattermost/mattermost/commit/e9ae890a013bb57989fcbdb548d8b7b86b240237","https://mattermost.com/security-updates"],"severity":{"label":"low","score":3.8},"sources":[{"source":"osv","source_id":"GO-2026-5474#Go/github.com/mattermost/mattermost-server/v5","url":"https://osv.dev/vulnerability/GO-2026-5474"},{"source":"nvd","source_id":"CVE-2026-6334","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6334"}],"summary":"Mattermost doesn't enforce client identity binding during the OAuth authorization code redemption flow in github.com/mattermost/mattermost-server"}